1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5fea526c9dcd551d3a0b36c5d4cc04fb0935fac4c6a82399550b8fcf85df0e3. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/56f94b1b-69a5-45ab-bfbe-576d00801730.json and https://artists.proofprofile.net/proofs/artist/56f94b1b-69a5-45ab-bfbe-576d00801730.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaebb9b1bbbefbec1841246202724798f007a0f1813d83b93e832b3fca185b285. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TRAAB0700041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c8d728c1ed9a0604804d34f77dbaec618c944860e3d096d7ba547416129f021. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TRAAB0700046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ab8cffabe4ddf98deab674328add9094d9fec84dacc54dde68d34e33552845f. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TRAAB0700055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e4c0ac974d401fd4e74feca3e8e49b6757f19762c1b6c1de470b1365795d77c. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TR2340900147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8d79f5877df94242687b19c2d6cb3456457f09c446b57f30ff26298a79ce9c9. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TR2340900150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9fbbfb4ae180e05db7e9d7ea54e516e4f49b1516d3a9b55c27f7c848a4d1b12. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TR2340900151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7cb76912c02af1763f7cd15071257c69703e3942e3e6825bb8ff49ca42b5b3a. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TR2340900157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfac3ee8c2bd50c2cbd45f9c85be4dbe5d0e894805d47f4f80da55dddd538b46. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TR2340900159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11783964c54365167bdc21189a99053b175574829d00858e37797b61f62d859a. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TR2341100200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2144c0cdf2446501663701ced26eab8730fdee81c096e0baf0694bb7a51dbedb. Chain 2 (Bitcoin): anchored in block 957658 (2026-07-12T05:03:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TR2341100202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ca0db29fa2a736f8efd7acaecce78083b917c0c5d9d3ee0b60004c046aa8806. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TR0891300025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x660ae3cca3e59b836f62e8bb4b23a0930a3165ff4e5ffd1631d407ebb478f55d. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TR0891300040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bfe6555336d1369c6c0d29a73b1c72e3ef3728fb85e0c564a86bc4491627e69. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TR0891300039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62fc068dec15f484e914ff61aa7d5bfdbfe21c39111a0cfc1b6f56afd57b07ee. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TRARJ1500056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x105d3d34bb0149ffd2d3cfbd4a5aa6b27a0681dbb58380ff0ed9782bef4ce2a3. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TRARJ1500060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc286ba2c5d206adf38971d0e61f28cc3162dadd264bfd865c4bc98456758f3ba. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TRBHS1900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2493c3e1614e7510df495b014f5b14f31acbb57f5e0877feaabf3dd465fa0391. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:29:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TRBHS2200023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf86ad6472f318fe1652a99b6f282fb98c40462c5d28fee91d9f0cb39a51e95d2. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TRBHS2300028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f239618c67888ab743002456713a6904aef3305bf23fc75363859d949e12a8d. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TRBHS2400032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc229ef622f9578e00057549a3aa271afa1c229c039767404e1d901539fc6c0d9. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TRBHS2400033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x298504ec99aef1a5286349b0a3cfd6c22f0ba28addde6b4c95b6284f2a0e9e55. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TRBHS2500002.